A SYSTEM AND METHOD FOR FREE FORM COMMENTS FOR A PROGRAMMABLE LOGIC CONTROLLER

摘要

A method of annotating a specification of a programmable logic controller is provided that includes displaying a graphical element in a first graphical language for programming the programmable logic controller, and displaying a comment associated with the graphical element. A method for converting a specification for a programmable logic controller in a first language to a second language is provided that includes converting a first instruction in the first language to a second instruction in the second language, and converting a first comment associated with the first instruction to a second comment associated with the second instruction. A computer-readable recording medium is provided.